OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text, Geospatial and ...
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OrientDB is an Open Source Multi-Model NoSQL DBMS with the support of Native Graphs, Documents Full-Text, Reactivity, Geo-Spatial and Object Oriented concepts. It's written in Java and it's amazingly fast: it can store 220,000 records per second on common hardware. No expensive run-time JOINs, connections are managed as persistent pointers between records. You can traverse thousands of records in a few milliseconds. Supports schema-less, schema-full and schema-mixed modes. Has a strong security profiling system based on user and roles and supports SQL amongst the query languages. Thanks to the SQL layer it's straightforward to use for people skilled in the Relational world.
The most common reason applications scale out badly is, very often, the database. The database is the bottleneck of most applications. OrientDB scales out very well on multiple machines, thanks to the Multi-Master replication where there is no single bottleneck on writes like with Master-Slave replication. The database can be up to 302,231,454,903,657 billion (2^78) records for the maximum capacity of 19,807,040,628,566,084 Terabytes of data on a single server or multiple nodes.
OrientDB has been designed to be very fast. It inherits the best features and concepts from Object Databases, Graph DBMS and modern NoSQL engines. OrientDB manages relationships without the run-time costly join operation, but rather with direct pointers (links) between records. No matters if you have 1 or 1,000 Billion of records, the traversing cost remains constant. Download the Benchmark PDF XGDBench: A Benchmarking Platform for Graph Stores in Exascale Clouds by Tokyo Institute of Technology and IBM Research.
As Multi-Model DBMS, OrientDB could work as an extended Document Database and an extended Graph Database. Take a look at OrientDB vs MongoDB for Document Databases and OrientDB vs Neo4j to have a comparison with a popular Graph Database.
Yes. OrientDB is totally written in Java and can run on any platform without configuration and installation. The full Server distribution is a few MBs without the demo database. Do you develop with a language different than Java? No problem, look at the Programming Language Binding.
OrientDB Community Edition is free for any use (Apache 2 license). If you are in production don't miss the Enterprise Edition and professional support service. For courses and training look at the on-line course catalog.
OrientDB is licensed by OrientDB LTD under the Apache 2 license. OrientDB relies on the following 3rd party libraries, which are compatible with the Apache license:
References: - Apache 2 license (Apache2): http://www.apache.org/licenses/LICENSE-2.0.html
Common Development and Distribution License (CDDL-1.0): http://opensource.org/licenses/CDDL-1.0
Eclipse Distribution License (EDL-1.0): http://www.eclipse.org/org/documents/edl-v10.php (http://www.eclipse.org/org/documents/edl-v10.php)
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